Changes to List all sites in a nation

for the query request parameter fields[sites], default value was added

for the query request parameter include, default value was added

for the query request parameter page[number], default value 1 was added

for the query request parameter page[size], default value 20 was added

for the query request parameter fields[sites], the type changed from string to array

the response's body type changed from object to no type for status 200

removed the required property data from the response with the 200 status

removed the optional property links from the response with the 200 status

added index_document subschema #2 to the response body allOf list for the response status 200

media type application/json was changed to a more specific media type application/vnd.api+json for the response status 200

added the non-success response with the status 401

added the non-success response with the status 429